NL2012123C2 - Blade and flap for aeronautic or windmill application. - Google Patents

Blade and flap for aeronautic or windmill application. Download PDF

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Publication number
NL2012123C2
NL2012123C2 NL2012123A NL2012123A NL2012123C2 NL 2012123 C2 NL2012123 C2 NL 2012123C2 NL 2012123 A NL2012123 A NL 2012123A NL 2012123 A NL2012123 A NL 2012123A NL 2012123 C2 NL2012123 C2 NL 2012123C2
Authority
NL
Netherlands
Prior art keywords
flap
actuator
blade
windmill
sensor
Prior art date
Application number
NL2012123A
Other languages
Dutch (nl)
Inventor
Roeland Breuker
Lars Oliver Bernhammer
Mordechay Karpel
Original Assignee
Univ Delft Tech
Technion Res & Dev Foundation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Delft Tech, Technion Res & Dev Foundation filed Critical Univ Delft Tech
Priority to NL2012123A priority Critical patent/NL2012123C2/en
Application granted granted Critical
Publication of NL2012123C2 publication Critical patent/NL2012123C2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0232—Adjusting aerodynamic properties of the blades with flaps or slats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/72—Means acting on blades
    • B64C2027/7205—Means acting on blades on each blade individually, e.g. individual blade control [IBC]
    • B64C2027/7261—Means acting on blades on each blade individually, e.g. individual blade control [IBC] with flaps
    • B64C2027/7266—Means acting on blades on each blade individually, e.g. individual blade control [IBC] with flaps actuated by actuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/30—Wing lift efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Description

Blade and flap for aeronautic or windmill application
The invention relates to a blade for aeronautic or windmill application provided with at least one controllable flap, wherein at least a sensor, an actuator and a control system connecting to the sensor and actuator, and a power system for the control system, sensor and actuator are provided.
In the article 'Analysis and Wind Tunnel Testing of a Piezoelectric Tab for Aeroelastic Control Applications' by Sebastian Heinze and Moti Karpel, Journal of Aircraft volume 43, Nr. 6, November-December 2006, pages 1799 - 1804, it is proposed to apply a piezoelectric actuator for excitation of a free-floating trailing edge flap of a wingblade for aeronautical application. Although the article mentions that the trailing edge flap is free-floating, it is not perfectly free due to cables connecting the piezoelectric element to the rigid aerodynamic wing section.
The article 'Review of state-of-the-art in smart rotor control research for wind turbines' by T.K. Barlas and G.A.M. Kuik, Progress in Aerospace Sciences 46(2010) 1-27 discusses amongst others a conceptual layout of a smart wind turbine rotor blade. Inspired by existing technology in aircraft and rotorcraft applications, the general concept of a small movable control surface for a windmill blade to directly control lift on the blade is discussed. The small movable control surface is embodied as a rigid or deformable trailing edge flap. As a general design issue the article stipulates that the realization of a smart wind turbine rotor reguires implementation of our dynamic control surfaces, actuators, sensors and control systems on the blades.
The most recent article 'Aeroelastic Control Using Distributed Floating Flaps Activated by Piezoelectric Tabs' by Lars O. Bernhammer; Roeland the Breuker; Moti Karpel and Gijs J. Van der Veen; Journal of Aircraft Volume 50, Nr. 3, May-June 2013, pages 732 - 740 discloses an aeroservoelastic effector configuration that is actuated by piezoelectric tabs. The effector exploits trailing edge tabs installed on free-floating flaps.
One of the problems in the prior art solutions in which controllable flaps are applied to blades for windmills or for aeronautic applications is that maintenance is costly, particularly with windmill applications. A complete blade must be dismounted, repaired and placed back into position. During the repair time the windmill is out of operation.
It is an object of the invention to provide a solution to this long existing problem. A further object is to provide an alternative for the existing solutions.
Accordingly the invention is embodied in a blade and in a flap for aeronautic or windmill applications in accordance with one or more of the appended claims.
The essence of the invention is that in the controllable flap of the blade the power system, the control system and the at least one sensor and actuator are incorporated and that the at least one controllable flap is disconnectable from the blade so as to arrange that the flap is interchangeable as a modular operational unit. Accordingly the invention is embodied in a controllable flap for combination with a blade for aeronautic or windmill application, wherein in said flap a power system, a control system and at least one sensor and actuator are incorporated so as to arrange that the flap is usable as a modular plug-and-play unit for application with said blade .
In case there is any need to apply service to the controllable flap, it can be simply removed from its wing and replaced by another similar controllable flap so that the concerning wing can remain operational. This of course brings about tremendous savings and also makes servicing of the controllable flaps easier. Another benefit that particularly applies to windmill applications is that all relevant signals for control of the flap are during use of the flap rotating together. Different from prior art solutions there is therefore no need to transfer measurements or control signals between rotating and stationary parts of the windmill construction .
Beneficially the power system comprises a piezoelectric generator.
The invention will hereinafter be further elucidated with reference to the drawing of a nonlimiting example of a controllable flap which can be interchangeably applied in combination with a blade for aeronautic or windmill applications in accordance with the invention.
In the drawing: -figure 1 shows schematically and in accordance with the invention a part of a blade for aeronautic or windmill applications provided with a flap; and -figure 2 shows a diagram exhibiting the functional relations between the structural elements of the flap in accordance with the invention.
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
With reference first to figure 1 a part of a blade 1 is shown which can be used in an aeronautic or windmill application. The blade 1 is provided with a controllable flap 2, wherein the flap 2 houses several sensors 3, an actuator 4 for a trailing edge tab 7 extending from the flap 2, and a control system 5 connecting to the sensors 3 and the actuator 4. In the flap 2 there is also a power system 6 for the control system 5, the sensors 3 and the actuator 4. A further aspect of the invention is that the controllable flap 2 is disconnecta-ble from the blade 1 so as to arrange that the flap 2 is interchangeable as a modular operational unit which is usable as a modular plug-and-play unit in combination with the blade 1. The mechanical configuration that should be given to the blade 1 and the flap 2 to make the flap interchangeable is known to the skilled person and requires no further elucidation.
In a preferable embodiment the power system 6 comprises a piezoelectric generator in order to make use of the vibrations in or of the flap 2 and convert these vibrations into electrical energy.
With reference to figure 2 the functional relations of the structural elements depicted in figure 1 are further explained. The flap 2 houses an energy harvester 6 which derives energy from vibrations in or of the flap 2. The energy harvester 6 provides energy to sensors 3, controller 5, and actuator 4. Depending on the measurements with the sensors 3, the controller 5 drives the actuator 4 which connects to a trailing edge tab 7 that extends at the end of flap 2. The actuator 4 may for instance be embodied with fixed hinges 8 to cause that a predetermined deflection of the actuator results in a corresponding deflection of the trailing edge tab 7. Actuation by the actuator 4 may thus for instance result in that the trailing edge tab 7 moves to the position indicated with 7' or to an intermediate position between 7 and 7'. Of course the trailing edge tab 7 may also move in the opposite direction depending on the actuation of the actuator 4.
Although the invention has been discussed in the foregoing with reference to an exemplary embodiment of the blade and flap of the invention, the invention is not restricted to this particular embodiment which can be varied in many ways without departing from the gist of the invention and the scope of the appended claims. The discussed exemplary embodiment shall therefore not be used to construe the appended claims strictly in accordance therewith. On the contrary the embodiment is merely intended to explain the wording of the appended claims without intent to limit the claims to this exemplary embodiment. The scope of protection of the invention shall therefore be construed in accordance with the appended claims only, wherein a possible ambiguity in the wording of the claims shall be resolved using this exemplary embodiment.

Claims (3)

1. Turbineblad (1) voor aeronautische of windmolen toepassing voorzien van ten minste één regelbare flap (2), waarbij ten minste een sensor (3), een actuator (4) en een regelsysteem (5) die in verbinding staat met de sensor (3) en actuator (4), en een voedingssysteem (6) voor het regelsysteem (5), sensor (3) en actuator (4) is voorzien, met het kenmerk, dat in genoemde flap (2) het voedingssysteem (6), het regelsysteem (5) en de ten minste ene sensor (3) en actuator (4) zijn opgenomen en dat de ten minste ene regelbare flap (2) losneembaar is van het turbineblad (1) teneinde te bewerkstelligen dat de flap (2) uitwisselbaar is als een modulaire operationele eenheid.A turbine blade (1) for aeronautical or windmill application provided with at least one adjustable flap (2), wherein at least one sensor (3), an actuator (4) and a control system (5) are connected to the sensor ( 3) and actuator (4), and a feed system (6) for the control system (5), sensor (3) and actuator (4), characterized in that in said flap (2) the feed system (6), the control system (5) and the at least one sensor (3) and actuator (4) are included and that the at least one adjustable flap (2) is detachable from the turbine blade (1) in order to ensure that the flap (2) is interchangeable is like a modular operational unit. 2. Regelbare flap (2) voor combinatie met een turbineblad (1) voor aeronautische of windmolentoepassing, met het kenmerk, dat in genoemde flap (2) een voedingssysteem (6), een regelsysteem (5) en ten minste éën sensor (3) en actuator (4) zijn opgenomen teneinde te bewerkstelligen dat de flap (2) bruikbaar is als een modulaire plug-and-play-eenheid voor toepassing bij genoemd turbineblad (1) .Adjustable flap (2) for combination with a turbine blade (1) for aeronautical or windmill application, characterized in that in said flap (2) a feed system (6), a control system (5) and at least one sensor (3) and actuator (4) are included to cause the flap (2) to be usable as a modular plug and play unit for use with said turbine blade (1). 3. Regelbare flap (2) volgens conclusie 2, met het kenmerk, dat het voedingssysteem (6) een piëzoelektrische generator omvat.Adjustable flap (2) according to claim 2, characterized in that the power supply system (6) comprises a piezoelectric generator.
NL2012123A 2014-01-23 2014-01-23 Blade and flap for aeronautic or windmill application. NL2012123C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2012123A NL2012123C2 (en) 2014-01-23 2014-01-23 Blade and flap for aeronautic or windmill application.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2012123A NL2012123C2 (en) 2014-01-23 2014-01-23 Blade and flap for aeronautic or windmill application.
NL2012123 2014-01-23

Publications (1)

Publication Number Publication Date
NL2012123C2 true NL2012123C2 (en) 2015-07-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
NL2012123A NL2012123C2 (en) 2014-01-23 2014-01-23 Blade and flap for aeronautic or windmill application.

Country Status (1)

Country Link
NL (1) NL2012123C2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752672A (en) * 1996-05-29 1998-05-19 Continuum Dynamics, Inc. Remotely controllable actuating device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752672A (en) * 1996-05-29 1998-05-19 Continuum Dynamics, Inc. Remotely controllable actuating device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LARS O BERNHAMMER ET AL: "Aeroelastic Control Using Distributed Floating Flaps Activated by Piezoelectric Tabs", JOURNAL OF AIRCRAFT, AIAA, RESTON, VA, US, vol. 50, no. 3, 1 May 2013 (2013-05-01), pages 732 - 740, XP008172050, ISSN: 0021-8669, DOI: 10.2514/1.C031859 *
SEBASTIAN HEINZE ET AL: "Analysis and Wind Tunnel Testing of a Piezoelectric Tab for Aeroelastic Control Applications", JOURNAL OF AIRCRAFT., vol. 43, no. 6, 1 November 2006 (2006-11-01), US, pages 1799 - 1804, XP055139911, ISSN: 0021-8669, DOI: 10.2514/1.20060 *

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Effective date: 20180201